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Keith Kosierowski

MA-Massachusetts / 335204

About Keith Kosierowski

Keith Kosierowski is a family systems and high-conflict specialist with over 25 years of experience supporting individuals, couples, and families through stress, conflict, and life transitions.

He helps people move from overwhelm and reactivity to clarity, confidence, and effective action—whether navigating relationship challenges, divorce, co-parenting, or personal growth.

Known for his calm, structured, and practical approach, Keith works with clients to simplify complex situations, reduce emotional strain, and create forward movement that actually holds.

If you’re looking for grounded, experienced support to help you think clearly and move forward with confidence, a consultation is a strong first step.

Online and in-person sessions
Accepting New Patients

Office Location(s):
, Hingham, MA, 02043
, Duxbury, Massachusetts,
, Newton, Massachusetts,
, Plymouth, Massachusetts,

Visit Website: https://kosiServices.com

About My Practice
KosiServices

If you’re dealing with stress, conflict, or a situation that feels harder than it should be, you’re not alone—and you don’t have to stay stuck in it.

Keith Kosierowski is a family systems and high-conflict specialist who works with individuals, couples, and families to navigate complex emotional, relational, and real-world challenges with clarity, structure, and direction.

With over 25 years of experience, Keith brings a rare combination of trauma-informed insight, practical strategy, and direct, grounded communication. His work focuses on helping clients:

Reduce overwhelm and emotional reactivity
Understand patterns within relationships and family systems
Navigate high-conflict dynamics with greater stability and control
Strengthen communication and decision-making
Move forward with clarity and confidence in difficult situations

Keith is especially known for his work in high-conflict relationships, divorce and co-parenting, reunification, and parent-child contact challenges, while also supporting clients in trauma, betrayal trauma, narcissistic relationship dynamics, executive functioning, stress management, addiction, and major life transitions.

His approach is calm, structured, and results-oriented. Clients often find that within a short period of time, they are thinking more clearly, communicating more effectively, and feeling more in control of situations that once felt overwhelming.

He integrates family systems thinking, trauma-informed care, and practical coaching, with a clear understanding of high-conflict and court-involved dynamics—helping you not just understand what’s happening, but know exactly what to do next.

Whether you’re an individual trying to get unstuck, a couple working to repair or make decisions, or a family navigating tension, court involvement, or change—the goal remains consistent:
reduce stress, increase clarity, and create meaningful forward movement.

Most people reach out when they’re tired of going in circles and want a clear, steady path forward.

If you’re ready for a different kind of conversation—one that is focused, honest, and genuinely useful—
schedule a free consultation and see if this feels like the right fit for you.


Services

Services

Individual Counseling & Coaching
Couples Counseling & Relationship Support
Family Therapy & Parent Coaching
Divorce & Co-Parenting Support
Parenting Coordination
Mediation
High-Conflict Case Consultation
Reunification & Parent-Child Contact Support
Executive Function & ADHD Coaching
Court-Involved Case Support (Therapeutic & Coaching)

Specializations

High-Conflict Relationships & Family Systems
Divorce, Co-Parenting, and Post-Separation Dynamics
Parental Alienation & Parent-Child Contact Challenges
Trauma, Betrayal Trauma, and Narcissistic Relationship Dynamics
Communication, Boundaries, and Conflict Resolution
Stress Management, Emotional Regulation, and Resilience
Executive Functioning, Focus, and Follow-Through
Life Transitions, Identity, and Personal Growth
Addiction & Behavioral Patterns

Clients typically seek support when they want to reduce stress, think more clearly, and take effective action in situations that feel stuck or overwhelming.


Education

Salem State University

In practice since: 2008

Cost Per Session
$40-$220
Payment Types
☑ All Major Credit Cards
☑ Venmo
☑ PayPal
☑ Visa
☑ Mastercard
☑ Discover
☑ FSH/FSA
☑ Personal Check

Health Insurance Plans
☑ Aetna
☑ Allways Health
☑ BCBS
☑ Cigna
☑ HPHC
☑ Mass General Brigham Health Plan
☑ Tufts

Groups
☑ ADD Group
☑ Coping Skills
☑ Couples Group
☑ Divorced Men
☑ Goal Setting
☑ Life Purpose
☑ Parenting Group
☑ Recovery Group
☑ Stress Management Group

Specializations
☑ ADD/ADHD
☑ Addiction
☑ Adolescents
☑ Anger Management
☑ Anxiety
☑ Attachment
☑ Behavioral Management
☑ Blended Families
☑ Children
☑ Clutter/Disorganization
☑ Co-Dependency
☑ Co-Parenting
☑ Coaching
☑ Coaching (Executive)
☑ Couples
☑ Crisis Intervention
☑ Developmental Issues
☑ Divorce and Separation
☑ Divorce Mediation
☑ Domestic Violence
☑ Education Consultation
☑ Family Therapy
☑ Forensic Evaluations/GAL
☑ Learning Disabilities/Special Ed
☑ Life Transitions/Mid-Life
☑ Mediation
☑ Meditation
☑ Multigenerational Issues
☑ Parenting
☑ Personality Disorders
☑ PTSD
☑ Recovery
☑ Spirituality
☑ Stress Management
☑ Substance Abuse
☑ Trauma

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